git-svn init/clone --stdlayout option to default-init trunk/tags/branches

The --stdlayout option to git-svn init/clone initialises the default
Subversion values of trunk,tags,branches: -T trunk -b branches -t tags.
If any of the -T/-t/-b options are given in addition, they are given
preference.

[ew: fixed whitespace and added "-s" shortcut]
Signed-off-by: Nmartin f. krafft <madduck@madduck.net>
Signed-off-by: NEric Wong <normalperson@yhbt.net>

Documentation/git-svn.txt

@@ -44,10 +44,15 @@ COMMANDS
 --tags=<tags_subdir>;;
 -b<branches_subdir>;;
 --branches=<branches_subdir>;;
+-s;;
+--stdlayout;;
 	These are optional command-line options for init.  Each of
 	these flags can point to a relative repository path
 	(--tags=project/tags') or a full url
-	(--tags=https://foo.org/project/tags)
+	(--tags=https://foo.org/project/tags). The option --stdlayout is
+	a shorthand way of setting trunk,tags,branches as the relative paths,
+	which is the Subversion default. If any of the other options are given
+	as well, they take precedence.
 --no-metadata;;
 	Set the 'noMetadata' option in the [svn-remote] config.
 --use-svm-props;;

git-svn.perl

@@ -77,11 +77,12 @@ BEGIN
 		   \$Git::SVN::_repack_flags,
 		%remote_opts );
 
-my ($_trunk, $_tags, $_branches);
+my ($_trunk, $_tags, $_branches, $_stdlayout);
 my %icv;
 my %init_opts = ( 'template=s' => \$_template, 'shared:s' => \$_shared,
                   'trunk|T=s' => \$_trunk, 'tags|t=s' => \$_tags,
                   'branches|b=s' => \$_branches, 'prefix=s' => \$_prefix,
+                  'stdlayout|s' => \$_stdlayout,
                   'minimize-url|m' => \$Git::SVN::_minimize_url,
 		  'no-metadata' => sub { $icv{noMetadata} = 1 },
 		  'use-svm-props' => sub { $icv{useSvmProps} = 1 },
@@ -292,7 +293,8 @@ sub init_subdir {
 sub cmd_clone {
 	my ($url, $path) = @_;
 	if (!defined $path &&
-	    (defined $_trunk || defined $_branches || defined $_tags) &&
+	    (defined $_trunk || defined $_branches || defined $_tags ||
+	     defined $_stdlayout) &&
 	    $url !~ m#^[a-z\+]+://#) {
 		$path = $url;
 	}
@@ -302,6 +304,11 @@ sub cmd_clone {
 }
 
 sub cmd_init {
+	if (defined $_stdlayout) {
+		$_trunk = 'trunk' if (!defined $_trunk);
+		$_tags = 'tags' if (!defined $_tags);
+		$_branches = 'branches' if (!defined $_branches);
+	}
 	if (defined $_trunk || defined $_branches || defined $_tags) {
 		return cmd_multi_init(@_);
 	}